RuleKeyCache (Buck)

All Known Implementing Classes:

TrackedRuleKeyCache
```
public interface RuleKeyCache<V>
```
Interface for caches for rule keys.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`V`	`get(BuildEngineAction action)`
`V`	`get(BuildEngineAction action, java.util.function.Function<? super BuildEngineAction,RuleKeyResult<V>> create)`
`V`	`get(AddsToRuleKey appendable, java.util.function.Function<? super AddsToRuleKey,RuleKeyResult<V>> create)`
`void`	`invalidateAll()`	Invalidate everything in the cache.
`void`	`invalidateAllExceptFilesystems(com.google.common.collect.ImmutableSet<ProjectFilesystem> filesystems)`	Invalidate all inputs not from the given `ProjectFilesystem`s and their transitive dependents.
`void`	`invalidateFilesystem(ProjectFilesystem filesystem)`	Invalidate all inputs from a given `ProjectFilesystem` and their transitive dependents.
`void`	`invalidateInputs(Iterable<com.facebook.buck.rules.keys.RuleKeyInput> inputs)`	Invalidate the given inputs and all their transitive dependents.

- Method Detail
  - get
```
@Nullable
V get(BuildEngineAction action)
```
    Returns:
    
    the rule key value for the given action, or null if it is not cached..
  - get
```
V get(BuildEngineAction action,
      java.util.function.Function<? super BuildEngineAction,RuleKeyResult<V>> create)
```
    Returns:
    
    the rule key value for the given rule, either serving it form cache or by running the given function.
  - get
```
V get(AddsToRuleKey appendable,
      java.util.function.Function<? super AddsToRuleKey,RuleKeyResult<V>> create)
```
    Returns:
    
    the rule key value for the given appendable, either serving it form cache or by running the given function.
  - invalidateInputs
```
void invalidateInputs(Iterable<com.facebook.buck.rules.keys.RuleKeyInput> inputs)
```
    Invalidate the given inputs and all their transitive dependents.
  - invalidateAllExceptFilesystems
```
void invalidateAllExceptFilesystems(com.google.common.collect.ImmutableSet<ProjectFilesystem> filesystems)
```
    Invalidate all inputs *not* from the given ProjectFilesystems and their transitive dependents.
  - invalidateFilesystem
```
void invalidateFilesystem(ProjectFilesystem filesystem)
```
    Invalidate all inputs from a given ProjectFilesystem and their transitive dependents.
  - invalidateAll
```
void invalidateAll()
```
    Invalidate everything in the cache.